With a 63mm profile, the VA10-AP50/C-25A (EF3506) 12" SPAL Puller Fan gives great performance in a small space.
If you're looking to maximise your airflow through the radiator core, setting up a dual thermo fan system with a custom fabricated shroud is one of the best ways to achieve this.
Often however, a dual thermo setup is hard to achieve due to the pulley arrangement in the engine bay, but with a SPAL low profile puller fan like the EF3506 you can maximise your capacity while allowing enough clearance (in most cases!).
Example of a dual EF3506 setup w/custom shroud (not to exact scale):
This month you can get quantity discounts on the SPAL EF3506 Puller Fan- buy more and save more!